I don't know why she would say that. As I said, we received a letter on May 17, 2017. We responded in about a week and offered to answer any other questions or provide any clarification, if we could. Then we didn't hear from her again until January 30, 2018. I don't know how answering her questions and responding promptly constitutes not being co-operative.
On April 24th, 2018. See this statement in context.